I'm glad Syed is getting another trial and certainly the prosecution did not put on a
flawless case, but I think it's a bit of a retcon to suggest that this is an instance of a prosecution malfunctioning to an
extreme extent (whether it's an instance of the
defense doing that: different question).
The prosecution had:
* The confession of an accomplice which included non-public details about the crime
* Cell phone evidence both directly implicating Syed and damaging his alibi
* A series of incriminating misstatements from Syed himself
Remember, the prevailing online sentiment about Hans Reiser was that he'd been stereotyped and then railroaded into a conviction as well. Reiser's defense also hinged on the notion that no physical evidence directly connected him to the crime. But that's not how murder prosecutions work.